Your Answer.. The amount of charge flowing through a particular area in unit time is called current. SI- unit of current is,,Ampere.{ A} Thank u.

**Current**

**Definition:**
Current refers to the flow of electric charge in a conductor. It is the rate at which charge flows past a given point in a circuit. Current is measured in amperes (A), which is the SI unit for electric current.

**SI Unit:**
The SI unit of current is the ampere (A). One ampere is defined as the flow of one coulomb of charge per second. It is represented by the symbol 'A' and is named after the French physicist André-Marie Ampère.

**Explanation:**

**1. Electric Charge:**
To understand current, we first need to understand electric charge. Electric charge is a fundamental property of matter. It can be positive or negative, and charges of the same type repel each other while charges of opposite types attract each other. The unit of electric charge is the coulomb (C).

**2. Flow of Charge:**
When electric charge moves through a conductor, it constitutes an electric current. It is important to note that current is the flow of charge and not the flow of electrons. Although electrons are the carriers of charge in most conductors, current can also be carried by other charged particles.

**3. Rate of Flow:**
Current is defined as the rate at which charge flows past a given point in a circuit. It is analogous to the flow rate of water in a pipe. Just as the flow rate of water is measured in liters per second, the flow rate of charge is measured in amperes.

**4. Formula:**
The mathematical relationship between current, charge, and time is given by the formula:

Current (I) = Charge (Q) / Time (t)

Where:
- Current (I) is measured in amperes (A)
- Charge (Q) is measured in coulombs (C)
- Time (t) is measured in seconds (s)

This formula indicates that current is directly proportional to the amount of charge passing through a point in a given time period.

**5. Direction of Current:**
Current flow is conventionally represented as the direction in which positive charges move. In reality, electrons, which carry negative charge, move in the opposite direction. This convention was established before the discovery of the electron, and it has been widely followed in electrical engineering and circuit analysis.

Overall, current is a fundamental concept in electrical circuits, representing the flow of electric charge. It is measured in amperes (A) and can be calculated using the formula relating charge and time. Understanding current is crucial for analyzing and designing electrical circuits and systems.